Hand grip exerciser



FIG. 1 is a front elevational view of a hand grip exerciser, showing mynew design, wherein the rear view is a mirror image;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a hand grip exerciser, as shown and described.